A long exposure is a wonderful way to blur motion in photography. Rivers, waterfalls, waves and clouds can look stunning when captured as streaks of silky blur. But how slow do you go? Some parts of a ...

Learn the basics of aperture and shutter speed with photographer Mark Watson. THE TWO DETERMINING factors for correct exposure in any photograph are the camera’s shutter speed and lens aperture. These ...

In photography, shutter speed is a common term used to discuss exposure time - the effective length of time a camera's shutter is open. It is measured in seconds or more often fractions of seconds.

Compared to ISO and aperture, shutter speed is a relatively straightforward concept to understand. It's the period of time that a camera's sensor (or film) is exposed to light after you hit the ...